Apparatus for producing cage grids



Jan. 1, 1946. c, HERZQG 2,391,969

APPARATUS FOR PRODUCING CAGE GRIDS Filed March 7, 1944 4 Sheets-Sheet l ill 36 Carl Jan. 1, 1946. c. HERZOG 2,391,969

APPARATUS FQR PRODUCING CAGE GRIDS Filed March 7, 1944 4 Sheets-Sheet 2 w! 76/ Z n 39,- 1 as m. 2 '7 anon-1m tfarl Her- Jan. 1, 1946. c. HERZOG 2,391,959

APPARATUS FOR PRODUCING CAGE GRIDS I Filed March 7, 1944 4 Sheets-Sheet 3 IIII Jan. 1, 1946. c. HERZOG 2,391,969

APPARATUS FOR PRODUCING CAGE GRIDS Filed March '7, 1944 4 Sheets-Sheet 4 Patented Jan. 1, 1946 UNITED STATES PATENT OFFICE 9 Claims.

My invention relates to an apparatus for windin cage grids for use in electronic devices.

An important object of the invention is to provide an apparatus which will do the work of the ordinary hand winding, and will save. time in the operation.

A further object of the invention is to provide apparatus of the above mentioned character wh ch is automatic in operation.

Other objects and advantages of the invention will be appare t during the course of the following descri tion:

In the accompanying drawings. forming a part of this a p ication and in hich like numerals are employed to designate like parts throughout the same,

F ure 1 is an end elevation of a machine embo n m invention,

F ure 2 is a side elevation of the same,

F ure 3 is a plan view of the same,

Fi ure 4 is a perspective view of the same,

Figure 5 is a sid elevation of the mandrel and assoc ated wire uide,

Figure 6 is a pers ective view u on an enlarged scale of the mand el and wire gu de. showing the s arting of the winding of one loop included in the cage,

Figure 7 is a similar view showing the wire guide moved to the free end of the mandrel and the mandrel advanced,

Figure 8 is a similar view showing the wire guide returned to the starting posit on, and moved beyond the starting osition, and the loop com leted. and the mandrel further advanced.

Figure 9 is a similar view, showing six loops formed u n the mandrel after the wire guide has com leted s x cycles,

Figure 10 is a perspective view of the completed cage rid. removed from the mandrel.

Figure 11 is a front end elevation of the mandrel. s owing all loops wound thereon for produc ng a complete cage grid,

Figu e 19. s a transverse section taken on line |2'-I2 of Figure 5, and,

F gure 13 is a perspective view of the mandrel and wire guide.

In the drawings, wherein for the purpose of illustration is shown a preferred embodiment of my invention, the numeral 2|] designates a horizontal table or base, supported by legs 2|, fixed to a suitable support. Rigidly mounted upon the top of the table 20 are spaced blocks 22, having spaced horizontal guides or rails 23, rigidly mounted thereon.

The numeral 24 designates an an ularly adjustable plate or web, which is pivotally mounted upon the table 20, at 25, to swing in a vertical plane. This plate has a segmental slot 26. Figure 2. receiving a bolt 21, rigidly secured to the table 20, and carrying a nut 28, by means of which the plate 24,may be locked to the table in theselected adjusted position. The plate 24 extends above the top of the table 20 and carries a bearing-sleeve 29. Ihe longitudinal axis of this bearing-sleeve is arranged in a vertical plane parallel with the rails 23, but this axis is vertically inclined in such vertical plane, for a purpose to be described.

Rotatably mounted within the bearing sleeve 29 is a shaft 30, held against longitudinal displacement by any suitable means and having a wormgear 3! rigidly mounted thereon, at its rear end, and also having a hand-wheel 32 rigidly secured thereto, for turning the same. The bearingsleeve 29 holds the shaft so that its axis of rotation is inclined in the vertical plane which is parallel with the rails 23, and th worm-wheel Si is also vertically inclined, Figure 2 and engages with and is driven by a worm 33, rigidly mounted upon a vertical shaft 34, carrying a hand-crank at its upper end, for turning the same. The shaft 34 may be manually turned or it may be power driven. Th lower end of the shaft 34 is journaled. in an opening 35, formed in the table 29. The shaft 34 is held against longitudinal movement by any suitable means and has a horizontal large gear 36, rigidly secured to its lower end. The gear 35 engages a, small gear 31, arranged beneath and rotatably mounted upon the table 20, and this small gear 31 engages a second small gear 38, also arranged beneath and rotatably mounted upon the table 20'. Each gear 3i and 38 may have a vertical spindle 39, provided at its top with a head 49. A bearing sleeve 4! receives the spindle 39 between the gear and the head 39, and the bearing-sleeve is held within an opening 42 in the head 20 by a setscrew 43. The gear 38 engages a large gear 44, rigidly mounted upon the lower end of a vertical shaft 45. This vertical shaft is journaled in a vertical opening 45 formed in the table 20, Figure 2, and extends upwardly beyond the top of the table and has a crank-disk 41, rigidly secured to its upper end. The gear 44 engages a horizontal gear 48, also arranged beneath the table 29 and rigidly mounted upon a vertical shaft 49, Figure 1, rotatable within a tubular boss 5!), and extending above the same, to be rigidly connected wi h a second horizontal crank-disk 5|.

Numeral 5,2 designates a lever, which extends approximately at a right angle to the axis of rotation of the shaft 39, and is arranged at an elevation above this shaft. The leve 52 has a reduced extens on 53, rigidly secured. thereto, pro.- vided at its free end with a tubular wire guide 5t. which is vertically arranged. This Wire guide 5 is moved in an elliptical path 54 disposed in a horizontal plane. A mandrel 55 is mounted upon the shaft 30, as will be described. This mandrel has an axis of rotation 55 which extends lon itudinally of the elliptical path 54 The elliptical path 54 has a longitudinal axis 55 The axes 55 and 55 are arranged in the same vertical plane but are angularly disposed with relation to each other, the axis 55 being horizontal and the axis 55 vertically inclined in a direction longitudinally of the axis 55 The mandrel 55 is inclined and extends upwardly toward its free end receiving a roller 59, rotatable upon a vertical pin g 60, rigidly secured to the crank-disc 41 excentrically thereof. It is thus seen that the rotation of the crank-disk 41 will reciprocate the carriage 55 longitudinally of the rails 23 and the turning axis 55 of the mandrel 55. mounted upon the top of the carriage 56 and has a longitudinal opening or slot 6|, for slidably receiving a block 62, having an opening to pivotally receive a vertical pin 63, rigidly secured to the carriage 56. At its end remote from the extension 53, the leve 52 is provided with an opening 64, to pivotally receive the crank pin 65, rigidly mounted upon the crank-disk i, excentrically thereof. The crank-disk 41 has a greater diam eter than the crank-disk 5| and the lever 52 will be shifted laterally a greater distance than longitudinally. From the foregoing description, it will be seen that the reciprocatory movement of the carriage 56 will reciprocate the lever 52 laterally, turning the same upon the crank-pin 65, whereby the wire guide 54 will be shifted longitudinally of the axis 55 The rotation of the crank-disk 5! will reciprocate the lever 52 longitudinally and also turn the same upon the pin 63. This longitudinal reciprocation of the lever 52 shifts the wire guide 54 transversely of the axis 55 The resultant movement of the wire guide 54 is in the elliptical path 54 The wire guide is therefore caused to travel in a loop-like path, disposed in a plane at an angle tothe axis 55 of the mandrel.

The mandrel 55 is cylindrical and has a slightly reduced portion 61 and a ring 68 and a further reduced portion 69, carried by a shank ill. This shank 10 is inserted within a socket H, carried by the rotatable shaft 39 and suitably clamped within the socket. The ring 68 is provided with spaced teeth H li H 'H H and TI, having passages 12 between them. Six of these teeth are shown for the purpose of illustration. As more clearly shown in Figure 11, these teeth extend radially beyond the mandrel 55. Each tooth has a leading edge 73 and a trailing edge '14. At

its free end, the mandrel 55 has pairs of notches 13 and 14 The notch 13 is opposite and in alignment with the leading edge 13 and the notch '14 is opposite and in alignment with the trailing edge 14. When there are six teeth, there are six pairs of notches '13 and 14 The reduced portion 69 has an opening 15 formed therein, for the passage of the wire.

Rigidly mounted upon the table is a vertical post 16, carrying a block 11, upon which is mounted a rotatable spool 18 from which the wire I9 is paid out. Adjustable friction means 89 is pro vided to control the rotation of the spool 18. The

The lever 52 is slidably wire I9 is passed about a tension grooved pulley 80, mounted upon a vertically swinging lever 8|, pivoted at 82, upon the post 16. This leve is moved upwardly by a retractile coil spring 83, and 84 is an adjustable stop to limit the upward movement of the lever 8|. The spring 83 and lever 8| regulate the tension of the wire 19. The wire 79 is fed downwardly over the grooved pulley 80 having its discharge point in alignment with the center of the elliptical path 54 and passed through the vertical wire guide 54 and is threaded through the opening l1 and wrapped about the reduced portion 69. Any other suitable means may be employed to attach the free end ofthe wire to the reduced portion 69.

The operation of the apparatus is as follows:

The mandrel 55 is continuously turned upon its longitudinal axis 55 in the direction of the arrows, Figures 6 to 9 and 11, which is clockwise, while the wire guide 54 is traveling in the elliptical path 54'. The shaft 34 moves the wire guide 54 through six cycles while it turns the mandrel for one complete revolution. The wire guide 54 will therefore complete one elliptical movement or cycle of operation while the mandrel 55 has turned one-sixth of a revolution. Figure 6 shows the starting of the winding operation. In this figure, the tooth it is near the uppermost position, and at this time the wire guide is near the rear end of the elliptical path.54 and istraveling forwardly toward the free end of the mandrel. It will accordingly guide the wire 19 between the teeth H and II and the wire will contact with the leading edge 73 .of the tooth 1 l The wire guide 54 continues to travel forwardly in the elliptical path 54?, and by the time the wire guide 54 reaches the free end of the mandrel 55 it will lay the wire in the notch 13% in alignment with the leading edge 53 of thetooth 1|. Figure 7. The wire guide 54 now travels transversely across the free end of the mandrel 55 and lays the wire in the notch 14, opposite the trailing edge M of the next alternate trailing tooth H Figure 8. The next trailing tooth H now anproaches the starting position and the guide 54 passes the wire about the leading edge 13 of the tooth H The tooth H now turns to the positions previouslyoccupied by the tooth li and the wire guide 54 continues in the elliptical path and forms the second loop, and this operation is repeated.

In making a complete grid, the wire 19 is passed about the leading edge of tooth H (see Figures 11 and 12), then across front end of mandrel at I to the trailing edge of tooth H then in the rear, at 2 to the leading edge of TI; then in the front at 3 to the trailing edge of the tooth li then in the rear at 4 to the leading edge of H then in the front at 5* to the trailing edge of H then in the back at (i to the leading edge' of N then in the front at 1 to the trailing edge of H then in the rear at B to the leading edge of He; then in the front at 9 to the trailing edge of H then in the rear at lll to the leading edge at li then in the front at i l to the trailing edge of 1 l then in the rear at [2 to the starting point. i

Fig. 9 shows all loops constituting the cage grid completed. Rings or bands and 86 are now applied to these loops and secured thereto by welding or the like. The sides of the loops are now severed at 81, after which the completed grid is removed from the mandrel. This completed grid is shown in Figure 10.

It is to be understood that the form of my invention herewith shown and described is to be taken as a preferred example of the same, and that various changes in the shape, size, and arrangement of parts may be resorted to without departing from the spirit of my invention or the scope of the subjoined claims.

Having thus described the invention, what I claim is:

l. A machine for winding cage grids for electronic devices, comprising a wire guide, means to move the wire guide in an elliptical path having a given plane, a mandrel having a longitudinal axis of rotation and an attaching end and a free end and spaced wire holding devices near the attaching end and spaced wire holding devices near the free end, means to support the mandrel so that its longitudinal-axis of rotation extends longitudinally of the elliptical path and is inclined with respect to the plane of the elliptical path and substantially maintain the mandrel in such position, and means to rotate the mandrel upon its longitudinal axis.

2. A machine for winding cage grids for electronic devices, comprising a wire guide, means to move the wire guide in a loop-like path having a given plane, a mandrel having a longitudinal substantially fixed axis of rotation and arranged near the loop-like path and having its axis of rotation inclined with respect to such path, the mandrel extending into the loop-like path, said mandrel having an attaching end and a free end, the mandrel being provided near the attaching end with wire holding devices and near the free end with wire holding devices, and means to rotate the mandrel upon its longitudinal axis.

3. A machine for winding cage grids for electronic devices, comprising a wire guide, means to move the wire guide for a plurality of cycles in a, loop-like path, a mandrel having a longitudinal axis of rotation and a free end and an attaching end, means to support the mandrel so that its longitudinal axis of rotation is inclined to the plane of the loop-like path and its free end enters the loop-like path and substantially maintain the mandrel in such position, the mandrel being provided near the attaching end with wire holding devices and near the free end with wire holding devices, and means to rotate the mandrel upon its longitudinal axis,

4. A machine for winding cage grids for electronic devices, comprising a wire guide, means to move the wire guide in a loop-like path having a given plane, a mandrel having a longitudinal axis of rotation and an attaching end and a free end, said mandrel being provided near its attaching end with wire holding devices extending radiall beyond the mandrel and provided near its free end with wire holding devices, means for supporting the mandrel so that its free end enters the loop-like path and its longitudinal axis of rotation is inclined with respect to the plane of such loop-like path and substantially maintain the mandrel in such position, and means to rotate the mandrel upon its longitudinal axis.

5. A machine for winding cage grids for electronic devices, comprising a wire guide, means to move the wire guide in a loop-like path arranged in a horizontal plane, a mandrel having a longitudinal axis of rotation, said mandrel having an attaching end and a free end, said mandrel being provided near its attaching end with wire holding devices extending radially beyond the mandrel and near its free end with wire holding devices, means for supporting the mandrel beneath the loop-like path and holding the longitudinal axis of rotation of the mandrel vertically inclined with respect to the horizontal plane of the loop-like path and arranging the free end of the mandrel within the loop-like path, and means to rotate the mandrel upon its longitudinal axis.

6. A machine for winding cage grids for electronic devices, comprising a support, an inclined shaft mounted upon the support, a mandrel attached to the inclined shaft and having its 1011'- gitudinal axis of rotation inclined, said mandrel having wire holding devices near its attaching end which extend radially beyond the mandrel and wire attaching devices near its free end, a wire guide arranged near the mandrel, means to move the wire guide in an elliptical path extending longitudinally of the mandrel, the longitudinal axis of rotation of the mandrel being inclined with respect to the plane of the elliptical path, and means to turn the shaft upon its longitudinal axis.

'7. A machine for winding cage grids for electronic devices, comprising a support, a vertically inclined shaft mounted upon the support, a mandrel attached to the inclined shaft and having its longitudinal axis of rotation vertically inclined, said mandrel having wire holding devices near its attaching end which extend radially beyond the mandrel and having wire attaching devices near its free end, a lever arranged near and above the mandrel, a wire guide secured to the lever, means to move the lever laterally, means to move the lever longitudinally, the lateral and longitudinal movements of the lever moving the wire guide in a substantially elliptical path, means to feed the wire to the wire guide, and means to turn the inclined shaft upon its longitudinal axis.

8. A machine for winding cage grids for electronic devices, comprising a support, a shaft mounted upon the support, a mandrel attached to the shaft and having a longitudinal axis of rotation, said mandrel having wire holding devices near its attaching ends which extend radially beyond the mandrel and wire attaching devices near its free end, a carriage mounted upon the support to move longitudinally of the axis of rotation of the mandrel, means to move the carriage, a lever mounted upon the carriage to move longitudinally with the carriage and shiftable longitudinally of its length with respect to the carriage, means to shift the lever longitudinally of its length with respect to the carriage, a wire guide secured to the lever, means to feed wire to the wire guide, and means to turn the shaft upon its longitudinal axis.

9. A machine for winding cage grids for electronic devices, comprising a support, a shaft mounted upon the support, a mandrel attached to the shaft and having a longitudinal axis of rotation, said mandrel having wire holding devices near its opposite ends, a guide device mounted upon the support and extending longitudinally of the longitudinal axis of the mandrel, a carriage mounted upon the guide device to be shifted longitudinally thereof, a lever mounted upon the carriage and having a, longitudinal slot, a guide block mounted within the slot and pivotally mounted upon the carriage, a crank disk having an eccentric crank pin engaging the carriage, a second crank disk having an eccentric crank pin engaging the lever, a wire guide secured to the lever, means to feed the wire to the wire guide, means to rotate the crank disks, and means to rotate the shaft.

CARL HERZOG. 

